Lifting attachment for road graders



Nov. 18 1930. A. J. MONROE ET AL LIFTING ATTACHMENT FOR ROAD (TRADERS 2 Sheets-Sheet 1 Filed Sept. 6. 1929 Georye WJ/onroe INVENTOR ATTORNEY Nov. 18', 1930. A. J. MONROE ET AL LIFTING ATTACHMENT FOR ROAD GRADERS 2 Shets-Sheet 2 Filed Sept. 6, 1929 Geo? emizi'ae INVENTOR n-r'ro n usv Patented Nov. 1930 LIITIN'G Arrncqumrmr ronlnoa-nenannns Appl icati on fi led Se tember 6,1929. Serial No. 390,773.

Theobjeot of this invention is to provide for the adjustment and lifting movement of v d i radin'g machine,;this blade being carried blowa approximately.

'5 horizontal'frame adapted for tilting move ment and under the control of operating devices on both sides of the machine.

A further object is to provide operating 7 means including hand controlledworm' gear 10 ing, a longitudinal shaft on each side, and; a link havingspecial connection with the shaft and with the tiltableframe controlling the an ular position 'ofthe blade.

2 further object is to provide special l'fmeans for mountinga'nd adjusting a spring adapted to aidthe operator in; lifting the tiltable frame'and bladew'hen the'latter is to be elevated from normal operative position, either momenta ilyor when a particuso larp'orti'on of the workifinder' way has been finished. p Y

With the foregoing and other objects in view, the invention consists in thenovel con-, struction and arrangement of elements disiclosed, it being understood that modifications may be made Within the scope of the claims without departing from the spirit of the invention.

In the drawings forming part of this application:

Figure 1 is a view of the machine in side elevation.

Figure 2 is a top plan view. Figure 3'is a view in vertical transverse T section on line 33 of Figure 1.

Figure 4' is also .in vertical transverse section on a plane passing thru the gear housingsnear the drivers seat.

Figure 5 is a detail in section-showin U-shaped frame 12, the rear lower ends of which are connectedwith element 11 at'the fi points 1 1 Other retaining means a are means for adjusting the lifting spring which shown conventionally at 514; The'ueframe is o secured to a horizontal frame-ada ted to be tilted or inclined angularly in di' erent directijon's, by means of the particular mecha-j nism now toibejdescribed. This frameyma be of substantially A form, and the side members thereof are designated 15, theforwa'rd end of the framebeing mounted for universal. movement, as shown at 16; The connection here is directly or indirectly'with the forward truck, including the axle 17 and wheels 18. These wheels are to be mounted for tilting movement on ahorizontal axis, as shown more orless conventionally at 19,the c'onst'ruction'at this point being disclosed infxny, co pending application Serial Number 390,- 772, and not el'aim'ed in the present case. r f

TheA-shaped' frame also includes transverse angle braces or the like such as those desig'natedi20 and 21, andfd-iagonal braces 22, and the tiltable" or angula'rly" movable framejineludingthe el'ements15'i's tobe supported and controlled in the particular mamv I herein described and claimed.

7 The main frame includes theside member's 24, and this 'framepivotally supportsftheA- shapedfframe by means of links such as links 25, secured at 26, at their lower ends, and; pivotally secured at 27'by means of L-shaped devices 28 whichin turn are pivoted at 29 tojcrank arms 30, on the horizontal and 10h tudinally extending shafts 31. These sha is" are mounteclin suitable bearings, and are controlled thru suitable gearing by-a plurality of handwlhee'l'sr A v t "At the rear of the machine is an operators platform 33, and'jsupported thereon by any i at 34 arev housingsj 35, for the 1 gear fIn'e'Ci an'is'm. Each shaft 3 ljmounts,awormjwhs l' 36, keyed on the slifaftyand controlled b1 warm" 37 on I Fdlythe're h wheel such a's'fil), a, d t "esewheels; Iast'n'amedrrfa be positioned asifd dat'ed" in suitable; i means 1 shown conventiona llfi Figures 2 fa'n'd'4, so'that they win beat the rightand left of the operator; whose seat is shown at 4 1 in d l'n view of the fact that the liiilis 25 are secured as shownin Figure- 3, either 'sideof therfir'anie ineluding elements I5; 'Ffiiit'abls independently ofthe other. side, movement taking place at the same time at the rear portion of the horizontal tiltable frame, and at the universal connection shownconventionally at 16;

tion of the lower frame just described, in an adjusted position, that'is in the position of Figure 3m in a position in which it extends laterally to a greater degreeon one side of the stationary frame 2 4'than on the other.

' The threaded'elemeiit or's'crew 43 is con-' trolled by means of gearing including ele ments 50 and 51"and shaft 52, under the controlof the wheel or other hand operated device 53, which may be positioned as shown in Figure 1. 3

' A further important feature of construction is that relating to the mounting of a lifting spring, aiding the operator in the elevation of the blade 10, when the latter is r to be thrown out of'use temporarily or after the Work under way has been finished. V

The spring is connected forwardly to an eye bolt 55, thespring being designated 7 i 56,'and.extending rearwardly and upwardly as the arrangement is shown in the draw-i ings,-this spring having connection at the rear portion thereof with a'flexible device or 7 cable 57 passing over a tension pulley or the like 58. The cable57 extends thence in a downward directiomand is connected with the lower horizontal tiltable frame including elements 15, by means of any suitable device such as that shown in Figure 3 and designated 59. "This device is secured to one of the transverse elements of the frame last referred to. I

' In order to adjust the pulley 58, we provide particular mounting means including a bracket, U-hanger or the like designated 60, and having connecte'dtherewith an eye member 61 which is engaged by an eye portion 62 on the lower end of screw 63. This screw passes-thru astationary bracket 64, and the screw is surrounded by a spring 65, posi-' tioned above the bracket 64, and between the latter, and the hub portion of thehand wheel 66 having threaded connection withthe screw 63.; Adjustment is thereby secured in an: obvious manner, and the device just referred to will be within reach of the operator.

In order to disclose a completemaohine we have also shownahand operated device for 1 controlling the tiltingor leaning movement of the front wheels. A crank 70 is carried by 'one end of shaft or the like 71, and extends forwardly to point 72, where it has or will have operative connection with the mechanism shown conventionally at 19 for controlling the leaning movement of the front wheels. This mechanism thus controlling the wheels is described in the aforesaid pending application, Serial No. 290,772, filed September 6, 1929. Provisionis made for a similar ,leaning wheel movement'at the.rear of the machine, and the construction is employed for preventing side-wise movement of the machine when the latter is operated on transverse grades or sloping ground.

What is claimed is a W A lifting device for road graders includinga main frame'supported by wheels, an auxiliary frame movablymounted on themain frame, a blade carried by the auxiliary frame, means to raise and lower the blade, a spring secured to the main frame,va flexible element connecting the spring'to the auxiliary frame, a bracket secured to the main frame and having anopening, an operating rod extending throughsaid. opening, a pulley carried by the rod and having the flexible element trained thereov'en'a hand wheel threaded to said rod' In testimony whereof we aflix our signa tures.

' ANDREW J. MONROE.

' GEORGE W. MONROE. 

